Enum sql_ast::Value[][src]

pub enum Value {
    Number(String),
    SingleQuotedString(String),
    NationalStringLiteral(String),
    HexStringLiteral(String),
    Boolean(bool),
    Date(String),
    Time(String),
    Timestamp(String),
    Interval {
        value: String,
        leading_field: DateTimeField,
        leading_precision: Option<u64>,
        last_field: Option<DateTimeField>,
        fractional_seconds_precision: Option<u64>,
    },
    Null,
    Default,
}
Expand description

Primitive SQL values such as number and string

Variants

Number(String)

Numeric literal

SingleQuotedString(String)

‘string value’

NationalStringLiteral(String)

N’string value’

HexStringLiteral(String)

X’hex value’

Boolean(bool)

Boolean value true or false

Date(String)

DATE '...' literals

Time(String)

TIME '...' literals

Timestamp(String)

TIMESTAMP '...' literals

Interval

INTERVAL literals, roughly in the following format: INTERVAL '<value>' <leading_field> [ (<leading_precision>) ] [ TO <last_field> [ (<fractional_seconds_precision>) ] ], e.g. INTERVAL '123:45.67' MINUTE(3) TO SECOND(2).

The parser does not validate the <value>, nor does it ensure that the <leading_field> units >= the units in <last_field>, so the user will have to reject intervals like HOUR TO YEAR.

Show fields

Fields of Interval

value: Stringleading_field: DateTimeFieldleading_precision: Option<u64>last_field: Option<DateTimeField>fractional_seconds_precision: Option<u64>

The seconds precision can be specified in SQL source as INTERVAL '__' SECOND(_, x) (in which case the leading_field will be Second and the last_field will be None), or as __ TO SECOND(x).

Null

NULL value

Default

use the default value

Trait Implementations

Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

Formats the value using the given formatter. Read more

Formats the value using the given formatter. Read more

Feeds this value into the given Hasher. Read more

Feeds a slice of this type into the given Hasher. Read more

This method tests for self and other values to be equal, and is used by ==. Read more

This method tests for !=.

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more

Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

Performs the conversion.

Performs the conversion.

The resulting type after obtaining ownership.

Creates owned data from borrowed data, usually by cloning. Read more

🔬 This is a nightly-only experimental API. (toowned_clone_into)

recently added

Uses borrowed data to replace owned data, usually by cloning. Read more

Converts the given value to a String. Read more

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.